William m



(No Model.)

W. M. GORRY.

PLOW.

No. 318,980. Patented June 2, 1885.

NV PETERS. Pmwutfiu npher. Wakingion, P.3-

' point-section.

lJNTTnn dTaTns PATENT @rrrca.

"WILLIAM M. GORRY, OF \VILLIMANTIO, CONNECTICUT.

PLOW.

EPECIFICATION forming part of Letters Patent K031233536, dated June 2 1885i Application filed October 23, 1884. (No model.)

T0 at whom it put concern:

Be it known that 1, WILLIAM M. GORRY, of Nillimantic, in the county of W'indham and State of Connecticut, have invented certain new and useful Improvements in Plows, which improvements are fully set forth and described in the following specification, reference being had to the accompanying drawlugs.

This invention relates to the construction of plows, it being my purpose to improve materially the form of the mold-board, point, and landside, with a View to producing a plow which will require less power to draw it, and which shall be under the easy control of the operator in charge.

Said invention consists, first, of an improved form of mold-board; second, of extending the point-section a considerable distance above and below the mold-board, to which it is attached, and also of so constructing and hanging said point-section that it presents an actual cutting-edge (chisel-like) of such shape that continual friction and abrasion tend to keep it sharp rather than to dull said point; third, of gradually concaving longitudinally the lower outer side of the landside; and, fourth, of so cutting away the rear end of the mold-board and landside that the complete plow is practically balanced, making the heel of the landside and of the point-section the fulcrum on which the plow may be swung, as more fully described hereinafter.

In the annexed drawings, Figure 1 is a side view of my plow complete. Fig. 2 is a View of the moldboard and point-section from the rear side, the landside being outlined with dotted lines. Fig. 3 is a front-end view of said plow with beam removed. Fig. 4 is a cross-section on line 00 of Fig. 3, showing the cuttingedge of the point-section.

The letter A represents my moldboard, having a standard, a, by which it is attached to the beam 13. The moldboard A extends rearward a considerable distance, and is concaved throughout its entire length. At the forward end of said mold-board is an extension (indicated by dotted lines in Fig. 1) of the same general shape as the point-section O, forming an inner supportingshell for said This forward extension is set back or below the face of the mold-board proper, so that when the point-section is in place and properly secured to the mold-board the concaved outer side of said point matches perfectly the concaved surface of the moldboard. I find by thus supporting the point by a shell of the same shape and of nearly the same size there is less liability to break or to work loose than when bolted to a single lug or boss on the mold-board. The point-section G extends forward with the usual form of duclcbill, b, and upward above the moldboard, forming a shoe, 0. The form of the point-section on the landside side forms one of the features of my invention. So far asl am acquainted with the state of the art the pointsections in common use are formed either wedge shape or with one of their sides parallel with the line of movement of the plow. In such cases the dirt and gravel as they are cut and turned up are constantly abrading and wearing the cutting-edge of the point and soon dull it. make a point whose cutting-edge will be sharpened instead of dulled by use, I have cut the landside side of my point-section under, as shown in Fig. 4. It will readily be seen that the wear in such a form will be always on the mold-board side, and that as the'iron wears hack the cutting-edge is automatically sharpened. The landside E, which is secured to a ledge, (1, (formed as an integral part of the molclboard,) is so shaped at its front end that it matches the vertical cut-under wall of the point-section, but as it extends rearward is formed with a continually increasing concaved outer surface, so that at the heel it is considerably hollowed, as shown in Fig. 3. By thus concavin g said landside its base is extended outward and tends to out under and loosen the material plowed, requiring less power to move the plow than if it were formed to push the dirt (as many plows in common use do) instead of cutting under and loosening it.

Another and the final improved feature of my plow consists in making the heel of the landside correspond in length with the heel of the point-section on the opposite side, so that the plow when in use is balanced or substantially balanced on said heels of the pointsection and landsidc. It has been the more To avoid this result, and to vat-e or depress the point.

Having thus described my invention, I claim- 1. In combination with the mold-board having the bean1-staudard a, ledge d, and point-supporting shell all cast integral with each other, the point 0, extending above the point ofjunction with the mold-board, and having its landside face cutback, forming an acute angle with the line of movement of the complete plow, and a landside whose outer lower side (beginning at the point end)'is formed with a graduallydncreasing concavity, all as and for the purpose specified;

2. In a plow, a point-section whose landside face is cut back, forming an acute angle with theline of movement of the plow, a moldboard, substantially as described, and a landside whose outer lower side is gradually concaved from the point rearward, said landside being so cut away at its rear end that its heel is opposite the heel of the point, the com: plete plow being balanced on said heels, all of said elements being combined and used as and for the purpose specified.

WV ILLIAM M. GORRY.

\Vitnesses:

FRANK H. ALLEN, TYLER J. HOWARD. 

